Find a beat's BPM, practice with a metronome, or check which musical keys mix well together.
A small toolkit for musicians, DJs, and video editors — figuring out a song's tempo, practicing at a steady click, or checking which keys mix harmonically. Every tool here runs entirely in your browser using the Web Audio API, with no account and no software to install.
No — everything runs directly in your browser using standard Web Audio APIs. There's nothing to install and no account needed.
The Metronome uses the Web Audio API's own clock to schedule clicks precisely in advance, rather than a basic JavaScript timer that can drift — the same approach professional web-based metronomes use.
Yes, completely free, with no sign-up and no usage limit.
